After the U.S. Supreme Court ruled last Friday that same-sex couples have the constitutional right to get married, Chief Justice John Roberts and many others have argued that the reasoning used by the court to justify the right to same-sex marriage gives “no reason” why plural unions should be banned.

Although the ideas of people legally marrying more than one partner and married couples adding other love interests to their state-recognized marriages might seem far-fetched, Roberts’ gay marriage dissent makes the case that the majority’s opinion in Obergefell v. Hodges, written by Justice Anthony Kennedy, all but sets a precedent that could lead the nation down the slippery slope to the legalization of polygamy, also known as polyamory.

“Although the majority randomly inserts the adjective ‘two’ in various places, it offers no reason at all why the two-person element of the core definition of marriage may be preserved while the man-woman element may not,” Roberts wrote. “Indeed, from the standpoint of history and tradition, a leap from opposite-sex marriage to same-sex marriage is much greater than one from a two-person union to plural unions, which have deep roots in some cultures around the world. If the majority is willing to take the big leap, it is hard to see how it can say no to the shorter one.”

Read more on this in the source site, after the first three paragraphs. Click.. here.